Question

Calculate the Age of a user upon giving their birthdate.

Asked by: jollymon6672

I need to calculate the age of a user upon entering their birthdate in a form field in a CF Flash form.

Birthdate: 01/01/1970  Age: ## (Age get generated.)

Thanks

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Asked On
2005-09-14 at 12:14:11ID21561625
Tags

age

Topic

ColdFusion Application Server

Participating Experts
2
Points
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Comments
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Answers

 

by: mrichmonPosted on 2005-09-14 at 13:05:58ID: 14884340

DateDiff("yyyy", birthdate, Now())

should give you the difference in years between now and the day entered.  You may also have to adjust for the month as well in case the birthday already occurred.

 

by: jollymon6672Posted on 2005-09-14 at 13:11:15ID: 14884395

Here is what I have"

<cfformgroup type="horizontal" label="Birth Date:">
  <cfinput name="BirthDate" type="text" id="BirthDate" width="100" maxlength="10" required="yes" message="Invalid Birthdate" validate="date">
  <cfinput name="Age" type="text" id="Age" width="35" maxlength="3" required="yes" message="Invalid Age" validate="integer" label="Age:">
</cfformgroup>

I need the Age fields value to be populated with the "DateDiff("yyyy", birthdate, Now())" upon the user entering thier Birthdate in the Birthdate Field.

Wil this work? How?

 

by: mrichmonPosted on 2005-09-14 at 13:19:40ID: 14884480

oh in that case you will need to use actionscript - I am not very good at that...

 

by: jollymon6672Posted on 2005-09-16 at 06:44:32ID: 14897900

Ok, If I decide not to do it in the Flash Form, how do I account for the month?

 

by: M256Posted on 2005-09-17 at 06:30:25ID: 14903851

Put a JavaScript function in the onValidate field.
Sample code:

http://javascript.internet.com/calculators/age-calculator.html

It does a bit more than you want, but if you're familiar with JavaScript it shouldn't be a problem.

If you want me to sort it out, I'll take a look at it this afternoon.

 

by: jollymon6672Posted on 2005-10-05 at 09:06:38ID: 15023156

I guess I thought ther might be a very simple solution. Something like:

Date entered - todays date = age

 

by: M256Posted on 2005-10-05 at 09:27:54ID: 15023366

On the server side, this might be possible.  However, if you want it done without a page refresh, you are going to need a client-side language.  Like JavaScript.

Matthew

20120131-EE-VQP-002

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